/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.dx.io.instructions;

import com.android.dx.io.opcode.format.InstructionCodec;

/**
 * A decoded Dalvik instruction which contains the payload for a
 * {@code packed-switch} instruction.
 */
public final class FillArrayDataPayloadDecodedInstruction extends
		DecodedInstruction {

	/** data array */
	private final Object data;

	/** number of elements */
	private final int size;

	/** element width */
	private final int elementWidth;

	/**
	 * Constructs an instance. This private instance doesn't check the type of
	 * the data array.
	 */
	private FillArrayDataPayloadDecodedInstruction(InstructionCodec format,
			int opcode, Object data, int size, int elementWidth) {
		super(format, opcode, 0, null, 0, 0, 0L);

		this.data = data;
		this.size = size;
		this.elementWidth = elementWidth;
	}

	/**
	 * Constructs an instance.
	 */
	public FillArrayDataPayloadDecodedInstruction(InstructionCodec format,
			int opcode, byte[] data) {
		this(format, opcode, data, data.length, 1);
	}

	/**
	 * Constructs an instance.
	 */
	public FillArrayDataPayloadDecodedInstruction(InstructionCodec format,
			int opcode, short[] data) {
		this(format, opcode, data, data.length, 2);
	}

	/**
	 * Constructs an instance.
	 */
	public FillArrayDataPayloadDecodedInstruction(InstructionCodec format,
			int opcode, int[] data) {
		this(format, opcode, data, data.length, 4);
	}

	/**
	 * Constructs an instance.
	 */
	public FillArrayDataPayloadDecodedInstruction(InstructionCodec format,
			int opcode, long[] data) {
		this(format, opcode, data, data.length, 8);
	}

	/** @inheritDoc */
	public int getRegisterCount() {
		return 0;
	}

	public short getElementWidthUnit() {
		return (short) elementWidth;
	}

	public int getSize() {
		return size;
	}

	public Object getData() {
		return data;
	}

	/** @inheritDoc */
	public DecodedInstruction withIndex(int newIndex) {
		throw new UnsupportedOperationException("no index in instruction");
	}

}
